The report states that the prison guard had symptoms such as nausea, headaches, sweating, dry throat and general anxiety in the body.

Symptoms that lasted for two days.

But Linda Landin, head of the prison for the Mariefred institution, explains that he felt well again the next day.

After the incident, they have changed their routines at the institution.

- Should something similar happen again, you ventilate the room before entering, says Linda Landin.

In the clip, she tells how it all happened.

"Zero tolerance"

It sometimes happens that drugs enter the institution, but according to Linda Landin, it is not common.

- We have zero tolerance so it does not matter if it is common or not, but it should not happen at all.

She says that they work to detect drugs by, among other things, visiting people and inspecting cells.